Figure 1. Schirmer tests of normal control and pregnant rabbits. Schirmer score was 8.69±1.07 mm in normal control rabbits while the scores were reduced to 6±0.54 mm at 2 weeks’ pregnancy, 5.63±0.77 mm at 3 weeks, and 6.59±0.45 mm at 4 weeks pregnancy, with the score at each time point of pregnancy was significantly lower than that of normal controls (p<0.05, as indicated by *). Data are presented as mean±standard error of the mean (SEM).